| NWS Forecast for: Mount St Helens WA Issued by: National Weather Service Portland, OR Last Update: 8:21 am PST Jan 21, 2026 | |
| Today: Sunny, with a high near 39. North northwest wind 8 to 13 mph. Tonight: Mostly clear, with a low around 25. North northwest wind around 11 mph. Thursday: Mostly sunny, with a high near 34. West northwest wind 5 to 10 mph. Thursday Night: Partly cloudy, with a low around 18. West southwest wind 9 to 11 mph becoming north after midnight. Friday: Sunny, with a high near 30. East wind around 14 mph, with gusts as high as 20 mph. Friday Night: Clear, with a low around 17. Blustery. Saturday: Sunny, with a high near 33. Breezy. Saturday Night: Mostly clear, with a low around 20. Sunday: A slight chance of snow after 4pm. Mostly sunny, with a high near 34. Sunday Night: A chance of snow, mainly after 10pm. Mostly cloudy, with a low around 24. Monday: A chance of snow. Partly sunny, with a high near 33. Monday Night: A chance of snow. Mostly cloudy, with a low around 26. Tuesday: A slight chance of snow. Partly sunny, with a high near 38. Breezy. | |
| Mount St Helens WA 46.18°N 122.18°W (Elev. 6204 ft) | |
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